Equivalent & Substitute Parts Reference: SMBJ5347A/TR13

Part Overview

The SMBJ5347A/TR13 is a surface-mount Zener diode manufactured by Microchip Technology, designed for voltage regulation and transient suppression applications. It offers a nominal Zener voltage of 10 V and a maximum power dissipation of 5 W, housed in the DO-214AA (SMBJ) package. This product is currently active, but engineers may seek alternative models to address inventory needs, compliance requirements, or qualification standards. Substitutes must match critical electrical, mechanical, and certification parameters to ensure form, fit, and function.

Key Parameters

Manufacturer Part Number	Manufacturer	Category	Voltage - Zener (Nom)	Tolerance	Power - Max	Impedance (Max)	Current - Reverse Leakage @ Vr	Voltage - Forward (Max) @ If	Operating Temperature	Mounting Type	Package / Case	RoHS Status	Product Status	Qualification
SMBJ5347A/TR13	Microchip Technology	Diodes, Zener	10 V	±10%	5 W	2 Ohms	5 µA @ 7.2 V	1.2 V @ 1 A	-65°C ~ 150°C	Surface Mount	DO-214AA, SMB	RoHS non-compliant	Active	-
SZ1SMB5925BT3G	onsemi	Diodes, Zener	10 V	±5%	3 W	4.5 Ohms	5 µA @ 8 V	1.5 V @ 200 mA	-65°C ~ 150°C	Surface Mount	DO-214AA, SMB	ROHS3 Compliant	Active	AEC-Q101

Substitute Part Grouping Explanation

Substitute parts are grouped based on direct matches of key allowed electrical and mechanical parameters for Zener diodes in the DO-214AA, SMB package category. The following criteria are used for equivalence:

Zener voltage rating (10 V)
Package and mounting type (Surface mount, DO-214AA/SMB)
Operating temperature range
Product status (Active)
Provided compliance and qualification information

Additional parameters, such as tolerance, maximum power dissipation, impedance, and reverse leakage, are compared to confirm suitability as direct substitutes within the constraints of the provided specification.

Parameter Comparison

Part Number	Voltage - Zener (Nom)	Tolerance	Power - Max	Impedance (Max)	Current - Reverse Leakage @ Vr	Operating Temperature	Mounting Type	Package / Case	RoHS Status	Product Status	Qualification
SMBJ5347A/TR13	10 V	±10%	5 W	2 Ohms	5 µA @ 7.2 V	-65°C ~ 150°C	Surface Mount	DO-214AA, SMB	RoHS non-compliant	Active	-
SZ1SMB5925BT3G	10 V	±5%	3 W	4.5 Ohms	5 µA @ 8 V	-65°C ~ 150°C	Surface Mount	DO-214AA, SMB	ROHS3 Compliant	Active	AEC-Q101

Engineering Selection Recommendations

Engineering selection between SMBJ5347A/TR13 and SZ1SMB5925BT3G can be based on the following attributes:

Product Status: Both parts are listed as active.
RoHS Compliance: SZ1SMB5925BT3G is ROHS3 Compliant; SMBJ5347A/TR13 is RoHS non-compliant.
Qualification: SZ1SMB5925BT3G provides AEC-Q101 automotive qualification. Select based strictly on compliance requirements and qualification standards as determined by design constraints and certification needs.

Frequently Asked Questions (FAQ)

Q1: What are the critical parameters for substituting SMBJ5347A/TR13 with SZ1SMB5925BT3G?
A1: Substitution is determined by matching the Zener voltage rating, package type (DO-214AA, SMB), mounting type (surface mount), operating temperature range, product status, and provided compliance or qualification information.

Q2: Are there substantial differences in power rating or tolerance that impact direct equivalence?
A2: SMBJ5347A/TR13 has a 5 W power rating and ±10% tolerance, while SZ1SMB5925BT3G is rated at 3 W with ±5% tolerance. Differences should be evaluated against specific application requirements.

Q3: Can these substitute Zener diodes be used interchangeably in automated assembly?
A3: Both parts share DO-214AA (SMB) package and surface-mount configuration, supporting automated assembly compatibility. Always confirm package dimensions and placement requirements as specified.

Q4: Is RoHS compliance a consideration for these Zener diode substitutes?
A4: If RoHS compliance is required, SZ1SMB5925BT3G offers ROHS3 compliance, whereas SMBJ5347A/TR13 is not RoHS compliant.

Q5: Does qualification (e.g., AEC-Q101) affect substitute selection?
A5: SZ1SMB5925BT3G provides AEC-Q101 automotive qualification information, which may be required for certain regulated or automotive applications.

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